Starch sodium dodecenyl succinate prepared by one-step extrusion and its properties

Carbohydrate Polymers
Yaoqi TianShengjun Wu

Abstract

One-step extrusion was developed to prepare starch sodium dodecenyl succinate (SSDS). Effects of screwing speed, reaction temperature, moisture content, sodium hydroxide amount (as catalyst), and dodecenly succinic anhydride (DDSA) amount on the degree of substitution (DS) were investigated. Optimum conditions were determined and found to be as follows: screwing speed, 110rpm; temperature, 120°C; moisture content, 30%; sodium hydroxide amount, 0.5%; DDSA amount, 3%. Under these conditions, the DS of SSDS was 0.014%, and the reaction efficiency was 78%. The structure of SSDS prepared by one-step extrusion was partially characterised. Infrared absorption spectra showed peaks of ester bond and carbonyl group at 1707 and 1564cm(-1), respectively, indicating that dodecenyl succinic groups were introduced into starch molecule backbone by esterification agent. X-ray diffraction analysis showed that compared with native starch, the particle morphology of SSDS prepared by extrusion became irregular, and its crystallinity was partially destroyed.

References

Aug 31, 2013·Carbohydrate Polymers·Henning WinklerHendrik Wetzel

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Citations

Mar 4, 2020·Polymers·Atanu BiswasRoselayne F Furtado
Aug 16, 2019·Journal of Food Science and Technology·Abraham Calderón-CastroErnesto Aguilar-Palazuelos
Dec 19, 2020·Comprehensive Reviews in Food Science and Food Safety·Moira K Lauer, Rhett C Smith
Jun 3, 2021·Polymers·Ryan C AmosMario Gauthier

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